Nissan X-Trail 32. Instruction — part 1927
SN-164
< DTC/CIRCUIT DIAGNOSIS >
[WITH PARK ASSIST]
B2721-12 CENTER SENSOR [RL]
B2721-12 CENTER SENSOR [RL]
DTC Description
INFOID:0000000010736653
DTC DETECTION LOGIC
POSSIBLE CAUSE
• Harness or connectors (Center sensor rear LH circuit)
• Center sensor rear LH
FAIL-SAFE
• Obstacle detection function is stopped
• Alarm display is displayed on the information display of combination meter
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT
1.
Turn ignition switch ON.
2.
Turn ignition switch OFF and wait at least 30 seconds.
3.
Turn ignition switch ON and wait at least 30 seconds or more.
4.
Select “Self Diagnostic Result” mode of “SONAR” using CONSULT.
5.
Check DTC.
Is DTC B2721-12 detected?
YES
>> Proceed to
.
NO-1
>> To check malfunction symptom before repair: Refer to
GI-44, "Intermittent Incident"
.
NO-2
>> Confirmation after repair: INSPECTION END
Diagnosis Procedure
INFOID:0000000010736654
1.
CHECK CENTER SENSOR SIGNAL REAR LH CIRCUIT FOR SHORT (1)
1.
Turn ignition switch OFF.
2.
Disconnect sonar control unit harness connector and center sensor rear LH harness connector.
3.
Turn ignition switch ON.
4.
Check the voltage between sonar control unit harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace malfunctioning parts.
2.
CHECK CENTER SENSOR SIGNAL REAR LH CIRCUIT FOR SHORT (2)
Check the continuity between center sensor rear LH harness connector and ground.
DTC
Trouble diagnosis
(Trouble diagnosis contents)
Detecting condition
B2721-12
CENTER SENSOR [RL]
(Center sensor rear-left)
SHORT-BAT
(Short to battery)
Short circuit to power supply is detected in harness between sonar
control unit and center sensor rear LH when ignition switch is turned
ON.
Terminals
Voltage
(Approx.)
(+)
(
−
)
Sonar control unit
Connector
Terminal
B129
20
Ground
0 V
SN
B2721-12 CENTER SENSOR [RL]
SN-165
< DTC/CIRCUIT DIAGNOSIS >
[WITH PARK ASSIST]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
Is the inspection result normal?
YES
>> Replace center sensor rear LH. Refer to
SN-240, "REAR : Removal and Installation"
.
NO
>> Repair or replace malfunctioning parts.
Terminals
Continuity
(+)
(
−
)
Center sensor rear LH
Connector
Terminal
B121
2
Ground
Not existed
SN-166
< DTC/CIRCUIT DIAGNOSIS >
[WITH PARK ASSIST]
B2721-14 CENTER SENSOR [RL]
B2721-14 CENTER SENSOR [RL]
DTC Description
INFOID:0000000010736655
DTC DETECTION LOGIC
POSSIBLE CAUSE
• Harness or connectors (Center sensor rear LH circuit)
• Center sensor rear LH
FAIL-SAFE
• Obstacle detection function is stopped
• Alarm display is displayed on the information display of combination meter
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT
1.
Turn ignition switch ON.
2.
Turn ignition switch OFF and wait at least 30 seconds.
3.
Turn ignition switch ON and wait at least 30 seconds or more.
4.
Select “Self Diagnostic Result” mode of “SONAR” using CONSULT.
5.
Check DTC.
Is DTC B2721-14 detected?
YES
>> Proceed to
.
NO-1
>> To check malfunction symptom before repair: Refer to
GI-44, "Intermittent Incident"
.
NO-2
>> Confirmation after repair: INSPECTION END
Diagnosis Procedure
INFOID:0000000010736656
1.
CHECK CENTER SENSOR SIGNAL REAR LH CIRCUIT FOR OPEN
1.
Turn ignition switch OFF.
2.
Disconnect sonar control unit harness connector and center sensor rear LH harness connector.
3.
Check the continuity between sonar control unit harness connector and center sensor rear LH harness
connector.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace malfunctioning parts.
2.
CHECK CENTER SENSOR SIGNAL REAR LH CIRCUIT FOR SHORT
Check the continuity between sonar control unit harness connector and ground.
DTC
Trouble diagnosis
(Trouble diagnosis contents)
Detecting condition
B2721-14
CENTER SENSOR [RL]
(Center sensor rear-left)
OPEN/SHORT-
GND
(Open/Short to
ground)
Short circuit to ground or open circuit is detected in harness be-
tween sonar control unit and center sensor rear LH when ignition
switch is turned ON.
Sonar control unit
Center sensor rear LH
Continuity
Connector
Terminal
Connector
Terminal
B129
20
B121
2
Existed
SN
B2721-14 CENTER SENSOR [RL]
SN-167
< DTC/CIRCUIT DIAGNOSIS >
[WITH PARK ASSIST]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace malfunctioning parts.
3.
CHECK REAR SENSOR GROUND CIRCUIT
Check the continuity between sonar control unit harness connector and center sensor rear LH harness con-
nector.
Is the inspection result normal?
YES
>> Replace center sensor rear LH. Refer to
SN-240, "REAR : Removal and Installation"
.
NO
>> Repair or replace malfunctioning parts.
Terminals
Continuity
(+)
(
−
)
Sonar control unit
Connector
Terminal
B129
20
Ground
Not existed
Sonar control unit
Center sensor rear LH
Continuity
Connector
Terminal
Connector
Terminal
B129
22
B121
1
Existed
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